A nurse is caring for a client following a synchronized cardioversion. Which of the following findings indicates a therapeutic response to the treatment?

A. Cardiac monitor indicates sinus rhythm is correct. The goal of synchronized cardioversion is to terminate an abnormal tachydysrhythmia, such as atrial fibrillation, atrial flutter, or supraventricular tachycardia, and restore a normal sinus rhythm. A return to sinus rhythm indicates that the procedure was effective. B. Diminished breath sounds on auscultation is incorrect. Diminished breath sounds are not related to cardioversion and may indicate a respiratory complication, such as atelectasis or pneumothorax, which would require further assessment. C. Pacer spikes precede the QRS complex on the ECG tracing is incorrect. This finding is associated with a pacemaker, not a therapeutic response to cardioversion. Cardioversion does not involve pacemaker spikes unless the client already has a pacemaker. D. Weak peripheral pulses on palpation is incorrect. Weak pulses suggest poor perfusion or continued hemodynamic compromise, which would indicate an unsuccessful cardioversion or another complication, not a therapeutic response.